package speed;

public class Operator {
public static void main(String[] args) {
	int b=10;
	b+=4;
	System.out.println(b);
	System.out.println("------------------------------------------------------------------------------------------------");
	byte i = 10;
	i += 4;
	System.out.println("i+=4相当于i = i+4，但是这样输入会报错，因为4为int精度>byte");
	i = (byte)(i + 4);
	System.out.println(i);
	
	}
}
